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A random sample of size 15 yields }_(= 3.35 and 32 =1. Complete parts a through f below. Calculate a condence interval for the population mean whose...

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A random sample of size 15 yields }_(= 3.35 and 32 =1.52. Complete parts a through f below. a. Calculate a confidence interval for the population mean whose confidence level is D99. The confidence interval is D D.
(Round to two decimal places as needed. Use ascending order] b. Calculate a confidence interval for the population mean whose confidence level is D93. The confidence interval is D D.
(Round to two decimal places as needed. Use ascending order] c. Calculate a confidence interval for the population mean whose confidence level is 9.95. The confidence interval is |:|—|:|.
(Round to two decimal places as needed. Use ascending order] d. Calculate a confidence interval for the population mean whose confidence level is 0.99. The confidence interval is |:|—|:|.
(Round to two decimal places as needed. Use ascending order] e. Calculate a confidence interval for the population mean whose confidence level is OBI]. The confidence interval is |:|—|:|.
(Round to two decimal places as needed. Use ascending order] i. What assumptions were necessary to establish the validity of the confidence intervals calculated in parts a through e? Select all that apply.
D A. The sample size is at least 30. El B. The population standard deviation :5 is known.
D C. The population distribution is approximatel3|I normal.

Top Answer

a) 99% confidence interval Lower bound: 2.41 Upper bound: 4.31 b) 98% confidence interval Lower bound:... View the full answer

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